Rubber shoe



F. A. JOSEPH.

RUBBER SHOE.

APPLICATION FILED SEPT-25,19l8.

Patented Apr. 13, 1920.

and the memberswith which it isconnecte I class inquestion, the strap has custol'narily mm arms.

ram A. JOSEPH, 'or- Haviiir; confinement, Assisrroa 'rc assumes a 00., A ,cogronarronorco wncrrcor. I

RUBBER SHOE.- 1

T51422 whoin it mgmcml' iBait-akn Wu-13 FRANK A; 'Josn'riis New Haven, county o f -New Haven,v and 'Stateof- Connecticut, have mvented new and useful Improvements'in Rubber" Sh 7 of which the following i 11, clear, and exflfitdscription. a a

mve $1011 relates -to*.improvements inxruhber' shoes, andparticularly that class 'known to the trade as F footholds, the foothold'iheing secured t 'the leather shoe.- by means ofastrapwhich passes over the heelhoxlof the latter.-,, The object of theinven "tion the foothold as to insure the permanent union' of *the stra particularly the sole;

AI the manufacture of rubbershoe's oif the been formed with free ends which are led.- down to the shank o'f-the foothold andvulcanized, independently of one another; to the-sole] "It'has been found in practice that inHthe said constructiontha; straps -frev uently pull away" from the sole.v The cause- 201. t is'two-fold: First, each. end of the strap eceQarily ha's'but --a'small surface in contact with the "sole." :Therefore, when the rubber shoe is in' position upon the-foot the twistingof the latter will not permit the strains upon the strap. to be borne equally by the-stra endsat all times, .andthe strap end which as the weaker connection with the-sole finally .ulls'awayh Secondly, the shank of the'ruber shoe is somewhat-stifi and therefore .does not hug the shank of the.

leather shoe sufliciently to bar the entrance of moisture. This moisture attacks'the joint betweeneachend of the strap andthe sole and weakensthe union of the two. 4 The said defects are completely obviated by the present invention.

whet-lithe stra t- &8 j st, descri ed, the sin le-ply margins tat each side .iofthe, base 0 the s'tra'piwill portions of the flg 'edges ofYwings. b',

the strap ofthe =Sp s u oQLettersPstentL Patented-Apr.13,1920 n jmmucn and Septmher'fi, io a. Serial 255,565.

.-B;'i and a lay out of-the strap V is shown in igsfl. In; ioim'ing the. stra a-bitiz en of the United- States, resldmg at from thelay-out itis foldedjon' the line wings '0, This folded structure is, then turned until the edges- 1 1* meet and the wing 0 hrought' under and secured to parts assuming theposition shown in Fig. 3.

is built up'from the la y- .b .joined to the upper as indicated in 'Fig.

.dotted line-"r indicatesthe edge of the. wing 12 jan'd .t hejdotted line 7 indicates the mar- .flginaliedge of a'linin L; The triangular ounded b the inner and the otted lines 1g. 3 ,ewi-ll he'joined .to the forked shank f the sole B as indicated-in .1; In Lthis manner theshoe'will be formed. as a multi-ply structure at all points except at the triangular p'or'tion'D intermediate the inner edges of by The triangular portion in question, thereforawill con- "stitute a point of relatively reater flex'i bilityr Theinnermargin of t 'e completed strap structure may befoided over to form the'reinforcededge 9.,v as. shownfin Figs. 1

and3.

When the foothold thus constructed is drawn upon the leather shoe, the pull upon the projecting margin 301 the wing b, the a the strap will cause the flexible shank D to yield soithatits surface will uniformly grip the shankof the sheaths fork of the sole separating slightly for this purpose.

.And inasmuch as the flexible shank D'connectssections of the bas'e'of the strap which ordinarily constitute freeends of the latter, the strains imposed upon one section will be thrown in part upon the other section. Thus the strains are'distributed and the tendency of the strap to pull away from the sole is largelyjovercome. Having thus described my inventiora'what I clann and desire to protest by Letters Patent is: 1 I

A 'rubber sandai of the character descr1'bed, comprising"ar1 upper, a sole, and a strap, said strap having two spaced sections'secured to the shank ofithe. sole, the.

said sections being connected a relatively scribed comprising an upper,

' fheel' strap,

yielding section at its base adapted to hug the shank of a shoe when the strap is in 10 lace upon the heel of the latter the strap section adapted to drawn into with the shank of the shoe when conformity the strap is placed in position upon the heel of the latter. I a 2. A. rubber sandal of the character de a sole, and a said strap having a-relatively secured to the sole at opposite sides of said yielding section. a

' 3. 'A rubber san'dalof the character described comprising an upper, a solei and a i 15 heel strap said strap having a re ativel and the Shani;

eldmg; section at its base, of the sole being out awa at the marginal lines of said relativel yie ding section.

4; A rubber sanda comprising an upper,

in 8016 slide heel st'rap, the said strap being formed pfa unitary member folded to 'form a plurahty ofplies the ends of the member belng-joined to each other by lap seams at united to Leas es to the rear edges of thejupper.

5. A heelless rubbersandal comprisin an up er, a sole, get er said strap bein plurality of substantial y one of which is bent around the other to form a reinforcing binding, the folded plies ofthe strap being joined to the-rear ed es of the upper b be ing-also joine to each other adjacent their staggered lap seams and and a heel strap secure to:

folded to form a co-extensive plies orm an endless bandv of one ply the shank of the shoe and also being joined the upper and sole throughout their extent.

Signed at New Haven, day of Sept, 1918.

r FRANK AJOSEPH.

Conn. this 20th. 

